442333223 has 2 divisors, whose sum is σ = 442333224. Its totient is φ = 442333222.

The previous prime is 442333193. The next prime is 442333249. The reversal of 442333223 is 322333244.

It is an a-pointer prime, because the next prime (442333249) can be obtained adding 442333223 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442333223 - 2⁸ = 442332967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442333192 and 442333201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442333273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221166611 + 221166612.

It is an arithmetic number, because the mean of its divisors is an integer number (221166612).

Almost surely, 2^442333223 is an apocalyptic number.

442333223 is a deficient number, since it is larger than the sum of its proper divisors (1).

442333223 is an equidigital number, since it uses as much as digits as its factorization.

442333223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 26.

The square root of 442333223 is about 21031.7194494411. The cubic root of 442333223 is about 761.9325373185.

Adding to 442333223 its reverse (322333244), we get a palindrome (764666467).

The spelling of 442333223 in words is "four hundred forty-two million, three hundred thirty-three thousand, two hundred twenty-three".